Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- HTML Canvas(also: Canvas API, Canvas Element)
- An HTML element used to draw graphics on a web page via JavaScript, rendering content as a bitmap image rather than as structured DOM elements. Unlike SVG, canvas content is not inherently accessible to screen readers because it produces a flat pixel surface with no semantic…
- Human Interaction Proof(also: HIP, Human Interactive Proof)
- A challenge-response test designed to distinguish human users from automated software (bots). Human Interaction Proofs are the technical term for CAPTCHAs and similar verification systems. While effective against automated attacks, HIPs present significant accessibility…
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